Home
Gemstones


Dallasite and Proustite Optical Properties


Proustite and Dallasite Optical Properties


Optical Properties

Luster
Not Available   
Adamantine   

Pleochroism
Not Available   
Moderate; cochineal-red to blood-red   

Dispersion
Not Available   
Not Available   

Transparency
Not Available   
OpaqueUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) Rarely transparentMore from other references   

Refractive Index
1.540   
2.792-3.087   

Optic Character
Not Available   
Not Available   

Crystal System
Not Available   
Trigonal   

Birefringence
0.008-0.010   
0.295-0.296   

Clarity
Not Available   
OpaqueUlrich Henn and Claudio C. Milisenda   

Benefits >>
<< Physical Properties

Dallasite and Proustite Optic Character

Dallasite and Proustite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Dallasite and Proustite Physical Properties like crystallographic symmetry, pleochroism,etc. in the crystal. Some of the optical properties are refractive index, luster, optic character, pleochroism etc. Prominent among these is Dallasite and Proustite optic character. You might have noticed your gemologist rotating the gemstone while testing it. Rotating a gemstone along its optic axis helps in determining its optic character.

Compare Green Gemstones

Dallasite and Proustite Transparency

Similar to their colors, Dallasite and Proustite transparency can also be used as criteria for their primary identification. Although transparency cannot be the only criteria for gemstone identification, it can efficiently used in gemstone grading. Talking about their transparency, Dallasite is Not Available while Dallasite is Not Available in appearance.

Green Gemstones

Green Gemstones


Compare Green Gemstones